Sleep & Hunger: Why Your Rest is the Secret to Managing Cravings

Author: Ellie Hiller, RN, BSN, HSN Certified Nutrition Coach, Owner of Vulcan Nutrition

Let’s talk about sleep. We have all felt the consequences of a night—or multiple nights—with too little rest. According to the American Academy of Sleep Medicine (AASM), the current recommendation for adults is 7 or more hours of sleep per night. When we consistently get less than that, it is associated with a higher risk of mortality and cardiovascular events. In 2022, the American Heart Association even added sleep as a "Life’s Essential 8" factor for maintaining optimal cardiovascular health, proving just how vital it is for your body.

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The 4 Stages of Sleep

When we sleep, our body cycles through specific stages roughly every 90 minutes. To wake up feeling restored, you need to move through these four distinct phases:

1. N1 and N2 (Light Sleep): N1 occurs right as you fall asleep. During N2, your brain waves slow down. Experts believe this is when your brain organizes memories and information from your day. This stage accounts for roughly 45% of your time asleep.
2. N3 (Deep Sleep): This is the most critical stage for physical restoration, making up about 25% of adult sleep. In Stage 3, your body repairs tissues, builds muscle, and reinforces your immune system. You need this deep sleep to wake up feeling truly rested; without it, you'll feel drained no matter how long you were in bed.
3. REM (Rapid Eye Movement): This is where most dreaming happens. During REM, your brain activity looks very similar to when you are awake. It also makes up about 25% of your total sleep time.

The Connection Between Sleep and Hunger

Your circadian rhythm is your body's internal biological clock, and it plays a massive role in regulating your metabolism. When sleep is disrupted, it can lead to long-term consequences like increased calorie consumption and leptin resistance.

Out body has an internal biological clock. When our sleep is irregular (less than we need, abnormal schedule, interrupted, etc.), it can affect our hunger cues along with other things.

When your sleep suffers, so does your ability to manage hunger. This is due to two main hormones:

1. Leptin: The hormone that tells your brain, “I’m full, I can stop eating.”
2. Ghrelin: The hormone that signals, “I am hungry, I need to eat.”

Lack of sleep creates a "double-whammy": your leptin levels drop and ghrelin levels rise, leaving you feeling less satisfied after meals and hungrier between them.

5 Tips to Improve Sleep Through Diet and Lifestyle

1. Maintain a Regular Eating Schedule Irregular eating can disrupt your biological clock. Sleep is most affected by the timing of dinner; a general recommendation is to eat at least 2 hours before bedtime to allow for proper digestion. Additionally, ensure you are eating iron-rich foods like lean meats, eggs, and leafy greens, as iron deficiency can lead to insomnia.

2. Create a "Sleep Hygiene" Routine Just as you have a morning routine to wake up, you need a bedtime routine to wind down. This is what you do in the hour prior to bed to signal to your brain that it’s time to rest.

3. Use Reverse Engineering for Your Bedtime To get at least 7 hours of sleep, count backward from your wake-up time. If you need to be up at 5:00 AM, you should be asleep by 10:00 PM. Plan to start your "wind down" activities 30–60 minutes before your target sleep time.

4. Watch Your Beverages (Caffeine and Alcohol) Limit fluid intake 2 hours before bed to prevent waking up during the night. While alcohol might help you fall asleep faster, it impairs REM sleep, leading to sub-optimal rest. Caffeine is a stimulant that should ideally be stopped 8 hours before bedtime to ensure it doesn't interfere with your ability to drift off.

5. Participate in Regular Physical Activity Exercise releases endorphins that lower stress and anxiety. It also stimulates serotonin to help the body relax. However, keep the intensity low-to-moderate in the evening; a late-night HIIT class can actually impair sleep.

A Note on Supplementation: If lifestyle changes aren't enough, some find success with Magnesium, which can help lower cortisol and support GABA (a calming neurotransmitter). Note: This is not medical advice. You must consult your GobyMeds provider or primary doctor before adding new supplements to your routine.

If you are struggling to manage overeating, start by looking at your sleep. Quality rest is often the missing piece of the metabolic puzzle!

Ready to see if GobyMeds is a good fit for your wellness or weight loss journey? Click here to see if you qualify!

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